Modular block



FIG. 1 is a top perspective view of a modular block showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a top perspective view of a second embodiment of a modular block showing our new design;

FIG. 7 is a bottom perspective view thereof;

FIG. 8 is a top plan view thereof;

FIG. 9 is a front elevational view thereof;

FIG. 10 is a top perspective view of a third embodiment of a modular block showing our new design;

FIG. 11 is a bottom perspective view thereof;

FIG. 12 is a top plan view thereof;

FIG. 13 is a front elevational view thereof;

FIG. 14 is a top perspective view of a fourth embodiment of a modular block showing our new design;

FIG. 15 is a bottom perspective view thereof;

FIG. 16 is a top plan view thereof;

FIG. 17 is a side elevational view thereof;

FIG. 18 is a front elevational view thereof;

FIG. 19 is a top perspective view of a fifth embodiment of a modular block showing our new design;

FIG. 20 is a bottom perspective view thereof;

FIG. 21 is a top plan view thereof;

FIG. 22 is a side elevational view thereof; and,

FIG. 23 is a front elevational view thereof. 

The ornamental design for a modular block, as shown and described. 